EP0124948B1 - Resistor paste for an electrical resistance - Google Patents

Resistor paste for an electrical resistance Download PDF

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Publication number
EP0124948B1
EP0124948B1 EP84200642A EP84200642A EP0124948B1 EP 0124948 B1 EP0124948 B1 EP 0124948B1 EP 84200642 A EP84200642 A EP 84200642A EP 84200642 A EP84200642 A EP 84200642A EP 0124948 B1 EP0124948 B1 EP 0124948B1
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Prior art keywords
paste
resistance
resistor
resistor paste
binder
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German (de)
French (fr)
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EP0124948A1 (en
Inventor
Alexander Hendrik Boonstra
Cornelis Adrianus H. A. Mutsaers
Franciscus Nicolaas G. R. Van Der Kruijs
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Koninklijke Philips NV
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Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D257/00—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
    • C07D257/02—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
    • C07D257/04—Five-membered rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/06—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits
    • H01C17/06513—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component
    • H01C17/06533—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component composed of oxides
    • H01C17/0654—Oxides of the platinum group

Definitions

  • the invention relates to a resistance paste for an electrical resistance, consisting of a mixture of a metal oxide compound, a binder that remains permanently in the paste and a binder that is temporarily present in the paste, and to an electrical resistance, consisting of attached to a substrate, with connecting wires provided resistance material from the resistance paste, which has been freed from the binder temporarily present in the paste by heating.
  • a disadvantage of most of the compositions is that the temperature coefficient of resistance is quite large in the temperature range of -55 to + 150 ° C. which is of interest for practical use and within this range is quite temperature-dependent. Another disadvantage that occurs very often is that the resistance value changes greatly over time.
  • the object of the invention is now to create such a paste and a resistance body produced therewith, which has a resistance value that runs within a tolerance limit of not more than ⁇ 5% during the entire life of the resistance body.
  • the temperature coefficient of resistance must remain between -10x10-6 / ° C and + 10x10- 6 / ° C within the temperature range of -55 to + 150 ° C.
  • lifetime is understood to mean a period of 25 years at a temperature of 50 ° C.
  • an accelerated endurance test is carried out at 200 ° C for 200 hours.
  • the metal oxide compound has the formula below where 0.15 ⁇ y ⁇ 0.95 and O ⁇ z 0.5.
  • a type of glass to be designated as the preferred composition area in this respect is characterized by the constituents PbO, Si0 2 , BO ,, 5 and optionally AIO ,, 5 between the limits in mol%:
  • the resistance-determining component being more or less “diluted”.
  • the temperature coefficient of the resistance is set very precisely to the desired value by a correct choice of y. As a result of the negligible migration of the constituents of the metal oxide compound, a very constant temperature coefficient of resistance is measured over the lifetime.
  • a possible variation for setting the value of the specific resistance is the addition of an insulating oxide, such as aluminum oxide or titanium dioxide, which is difficult to dissolve or react with the other constituents.
  • the compounds Pb 2 Rh y Ru 2-y O 7-z used in the examples are shown as follows.
  • a basic solution of potassium ruthenate is assumed.
  • the amount of Rh (N0 3 ) 3 solution determined by the desired value of y is added to this solution.
  • the final pH of the solution must remain greater than 12.
  • a triple amount (mol) of Pb (N0 3 ) 2 solution compared to the sum of ruthenate and rhodate is added to the mixture.
  • a final pH value greater than 8 must also be ensured here, if necessary by adding KOH.
  • the resulting precipitate is filtered off, washed twice with water and then, after drying in air for 1 hour, is burned at 700 ° C.
  • the excess Pb0 is then removed with dilute HN0 3 , and the rest is dried at 150 ° C. in air.
  • Glass powder with an average particle size of about 1 ⁇ m and a composition: is mixed in a weight ratio of 1: 1 with the resistance material Pb 2 Rh 0.80 Ru 1.20 O 6.5 with a particle size smaller than 0.2 ⁇ m.
  • the powder is then processed into a paste with one or more binders and solvents, for example ethyl cellulose in benzyl benzoate.
  • the paste is applied by screen printing to a substrate made of aluminum oxide, which has previously been provided with AgPd contacts.
  • the printed substrates are dried and then heated according to the firing program at 850 ° C as the peak temperature.
  • the surface resistances have a value of 2.5 kQ, a TC R of -8x10- 6 / 'C in the temperature range from -55 to + 20 ° C and a TC R of + 7x10-6 / ° C in the temperature range from +20 to + 150 ° C.
  • a screen printing paste is produced with the glass powder from Example 1 and with the resistance material Pb 2 Rh 0.25 Ru 1.75 O 6.5 ', which has a particle size below 0.2 ⁇ m in a weight ratio of 6: 1.
  • the resistance patterns on a substrate produced in the screen printing process, as in example 1, are subjected to a firing program after drying with a peak temperature of 750 ° C.
  • the surface resistances obtained have a value of 0.3 M ⁇ with a layer thickness of 15 ⁇ m, a TC R in the temperature range from -55 to + 20 ° C from -6x 10- 6 / ° C and in the range from +20 to +150 ° Cfrom + 9x10 -6 / ° C.
  • Glass powder with an average particle size of about 1 ⁇ m and the following composition: is mixed in a weight ratio of 1: 4 with the resistance material Pb 2 Rh 0.5 Ru 1.5 O 6.5 and processed into a paste.
  • Resistors are produced on an Al 2 O 3 substrate using the screen printing process and the whole is exposed to a firing program with a peak temperature of 850 ° C. With a layer thickness of 15 ⁇ m, the resistances obtained have a value for the sheet resistance of approximately 50 k ⁇ .
  • the TC R is: and
  • the substrate with the resistors attached to it by screen printing is exposed to a firing process with a peak temperature of 750 ° C.
  • the resistors have a surface resistance value of 0.8 M ⁇ with a layer thickness of 15 ⁇ m.
  • the TC R is:
  • the resistors are exposed to an accelerated endurance test for 200 hours at 200 ° C in air.
  • the resistance values of all the resistors described above showed deviations of less than ⁇ 5% 0 at the end of the sample.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Plant Pathology (AREA)
  • Pest Control & Pesticides (AREA)
  • Agronomy & Crop Science (AREA)
  • Health & Medical Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
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  • Environmental Sciences (AREA)
  • Non-Adjustable Resistors (AREA)
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Description

Die Erfindung bezieht sich auf eine Widerstandspaste für einen elektrischen Widerstand, bestehend aus einem Gemisch aus einer metalloxidischen Verbindung, einem ständig in der Paste verbleibenden und einem vorübergehend in der Paste vorhandenen Bindemittel und auf einen elektrischen Widerstand, bestehend aus auf einem Substrat angebrachten, mit Anschlussdrähten versehenen Widerstandsmaterial aus der, durch Erhitzung von dem vorübergehend in der Paste vorhandenen Bindemittel befreiten, Widerstandspaste.The invention relates to a resistance paste for an electrical resistance, consisting of a mixture of a metal oxide compound, a binder that remains permanently in the paste and a binder that is temporarily present in the paste, and to an electrical resistance, consisting of attached to a substrate, with connecting wires provided resistance material from the resistance paste, which has been freed from the binder temporarily present in the paste by heating.

Aus der US Patentschrift 3681 262 ist eine Widerstandspaste bekannt, um daraus Widerstandskörper herzustellen. Die in der Paste verwendeten metalloxidischen Verbindungen müssen der nachfolgenden allgemeinen Formel entsprechen:

Figure imgb0001
worin M mindestens ein Metall aus der Gruppe Y, TI, In, Cd, Pb und einem seltenen Erdmetall mit der Atomnummer von 57 bis 71 ist, M' mindestens ein Metall aus der Gruppe Pt, Ti, Sn, Cr, Rh, Re, Zr, Sb und Ge ist,

  • M" mindestens eines der Metalle Ru und Ir ist,
  • x eine Zahl zwischen 0 und 2 ist,
  • y eine Zahl zwischen 0 und 2 ist und
  • z eine Zahl von 0 bis 1 ist, die wenigstens etwa gleich x/2 ist, falls
  • M ein zweiwertiges Metall ist. Unter diese Klasse von metalloxidischen Verbindungen fällt auch eine Verbindung mit der Formel
    Figure imgb0002
A resistance paste is known from US Pat. No. 3,681,262 in order to produce resistance bodies therefrom. The metal oxide compounds used in the paste must correspond to the following general formula:
Figure imgb0001
 where M is at least one metal from the group Y, TI, In, Cd, Pb and a rare earth metal with the atomic number from 57 to 71, M 'is at least one metal from the group Pt, Ti, Sn, Cr, Rh, Re, Zr, Sb and Ge is
  • M "is at least one of the metals Ru and Ir,
  • x is a number between 0 and 2,
  • y is a number between 0 and 2 and
  • z is a number from 0 to 1 that is at least approximately equal to x / 2 if
  • M is a divalent metal. This class of metal oxide compounds also includes a compound with the formula
    Figure imgb0002

Ein Nachteil der meisten der Zusammensetzungen ist, dass der Temperaturkoeffizient des Widerstandes in dem für den praktischen Gebrauch interessanten Temperaturbereich von -55 bis +150°C ziemlich gross ist und innerhalb dieses Bereiches ziemlich stark temperaturabhängig verläuft. Ein weiterer Nachteil, der sehr oft auftritt, ist, dass der Widerstandswert sich im Laufe der Zeit stark ändert.A disadvantage of most of the compositions is that the temperature coefficient of resistance is quite large in the temperature range of -55 to + 150 ° C. which is of interest for practical use and within this range is quite temperature-dependent. Another disadvantage that occurs very often is that the resistance value changes greatly over time.

Die Erfindung hat nun zur Aufgabe, eine derartige Paste und einen damit hergestellten Widerstandskörper zu schaffen, der einen Widerstandswert hat, der während der ganzen Lebensdauer des Widerstandskörpers innerhalb einer Toleranzgrenze von nicht mehr als ±5 %o verläuft. Ausserdem muss der Temperaturkoeffizient des Widerstands innerhalb des Temperaturbereiches von -55 bis +150°C zwischen -10x10-6/°C und +10x10-6/°C bleiben. Unter Lebensdauer wird in diesem Zusammenhang ein Zeitraum von 25 Jahren bei einer Temperatur von 50°C verstanden. Als Massstab wird dafür eine beschleunigte Dauerprobe während 200 Stunden bei 200°C durchgeführt.The object of the invention is now to create such a paste and a resistance body produced therewith, which has a resistance value that runs within a tolerance limit of not more than ± 5% during the entire life of the resistance body. In addition, the temperature coefficient of resistance must remain between -10x10-6 / ° C and + 10x10- 6 / ° C within the temperature range of -55 to + 150 ° C. In this context, lifetime is understood to mean a period of 25 years at a temperature of 50 ° C. For this purpose, an accelerated endurance test is carried out at 200 ° C for 200 hours.

Diese Aufgabe wird dadurch gelöst, dass die metalloxidische Verbindung die untenstehende Formel aufweist

Figure imgb0003
worin 0,15 ≤ y ≤ 0.95 und O ≤ z 0,5 ist.This object is achieved in that the metal oxide compound has the formula below
Figure imgb0003
 where 0.15 ≤ y ≤ 0.95 and O ≤ z 0.5.

Das Erhalten einer derart hohen Stabilität des nach dem Brennen erhaltenen Widerstandskörpers während der Gebrauchsdauer desselben ist der Tatsache zuzuschreiben, dass die Bestandteile der widerstandsbestimmenden metalloxidischen Verbindung eine zu vernachlässigende Migration in den üblichen, als ständig in der Paste verbleibendem Bindemittel (Dauerbindemittel) verwendeten Gläsern aufweist.Obtaining such a high stability of the resistance body obtained after firing during the period of use thereof is attributable to the fact that the constituents of the resistance-determining metal oxide compound have a negligible migration in the conventional glasses which are used as binders (permanent binders) which remain permanently in the paste.

Ein in dieser Hinsicht als bevorzugtes Zusammensetzungsgebiet zu bezeichnender Glastyp ist gekennzeichnet durch die Bestandteile PbO, Si02, BO,,5 und gegebenenfalls AIO,,5 zwischen den Grenzen in Mol%:

Figure imgb0004
A type of glass to be designated as the preferred composition area in this respect is characterized by the constituents PbO, Si0 2 , BO ,, 5 and optionally AIO ,, 5 between the limits in mol%:
Figure imgb0004

Beim Einstellen des Pegels des spezifischen Widerstandes verfügt man über die Variationsmöglichkeit des Verhältnisses der widerstandsbestimmenden metalloxidischen Verbindung zu dem Dauerbindemittel, wobei der widerstandsbestimmende Bestandteil mehr oder weniger «verdünnt» wird. Der Temperaturkoeffizient des Widerstandes wird durch eine richtige Wahl von y äusserst genau auf den gewünschten Wert eingestellt. Infolge der zu vernachlässigenden Migration der Bestandteile der metalloxidischen Verbindung wird in der Lebensdauer ein sehr konstanter Temperaturkoeffizient des Widerstandes gemessen.When adjusting the level of the specific resistance, one has the possibility of varying the ratio of the resistance-determining metal oxide compound to the permanent binder, the resistance-determining component being more or less “diluted”. The temperature coefficient of the resistance is set very precisely to the desired value by a correct choice of y. As a result of the negligible migration of the constituents of the metal oxide compound, a very constant temperature coefficient of resistance is measured over the lifetime.

Eine Variationsmöglichkeit zur Einstellung des Wertes des spezifischen Widerstandes ist die Hinzufügung eines isolierenden Oxids, wie Aluminiumoxid oder Titaniumdioxid, das sich nur schwer in den übrigen Bestandteilen löst bzw. mit denselben reagiert.A possible variation for setting the value of the specific resistance is the addition of an insulating oxide, such as aluminum oxide or titanium dioxide, which is difficult to dissolve or react with the other constituents.

Zur Erläuterung der Erfindung folgen untenstehend einige Ausführungsbeispiele. Die in den Beispielen verwendeten Verbindungen Pb2RhyRu2-yO7-z werden wie folgt dargestellt. Es wird ausgegangen von einer basischen Lösung von Kaliumruthenat. Dieser Lösung wird die durch den gewünschten Wert von y bestimmte Menge Rh(N03)3-Lösung hinzugefügt. Der End-pH-Wert der Lösung muss grösser bleiben als 12. Dem Gemisch wird eine dreifache Menge (Mol) Pb(N03)2-Lösung gegenüber der Summe von Ruthenat und Rhodat zugefügt. Auch dabei muss für einen End-pH-Wert grösser als 8 gesorgt werden, gegebenenfalls durch Hinzufügung von KOH. Der entstandene Niederschlag wird abfiltriert, zweimal mit Wasser gewaschen und daraufhin nach Trocknen während 1 Stunde an der Luft bei 700°C gebrannt. Danach wird der Überschuss an Pb0 mit verdünnter HN03 entfernt, und der Rest wird bei 150°C in Luft getrocknet.Some exemplary embodiments follow to explain the invention. The compounds Pb 2 Rh y Ru 2-y O 7-z used in the examples are shown as follows. A basic solution of potassium ruthenate is assumed. The amount of Rh (N0 3 ) 3 solution determined by the desired value of y is added to this solution. The final pH of the solution must remain greater than 12. A triple amount (mol) of Pb (N0 3 ) 2 solution compared to the sum of ruthenate and rhodate is added to the mixture. A final pH value greater than 8 must also be ensured here, if necessary by adding KOH. The resulting precipitate is filtered off, washed twice with water and then, after drying in air for 1 hour, is burned at 700 ° C. The excess Pb0 is then removed with dilute HN0 3 , and the rest is dried at 150 ° C. in air.

Beispiel 1.Example 1.

Glaspulver mit einer mittleren Teilchengrösse von etwa 1 µm und einer Zusammensetzung:

Figure imgb0005
wird in einem Gewichtsverhältnis 1:1 mit dem Widerstandsmaterial Pb2Rh0.80Ru1,20O6.5 mit einer Teilchengrösse kleiner als 0,2 µm gemischt. Daraufhin wird das Pulver mit einem oder mehreren Bindemitteln und Lösungsmitteln, beispielsweise Äthylcellulose in Benzylbenzoat, zu einer Paste verarbeitet. Die Paste wird durch Siebdrucken auf einem aus Aluminiumoxid bestehenden Substrat, das vorher mit AgPd-Kontakten versehen ist, angebracht. Die bedruckten Substrate werden getrocknet und daraufhin entsprechend dem Brennprogramm mit 850°C als Spitzentemperatur erhitzt.Glass powder with an average particle size of about 1 µm and a composition:
Figure imgb0005
 is mixed in a weight ratio of 1: 1 with the resistance material Pb 2 Rh 0.80 Ru 1.20 O 6.5 with a particle size smaller than 0.2 µm. The powder is then processed into a paste with one or more binders and solvents, for example ethyl cellulose in benzyl benzoate. The paste is applied by screen printing to a substrate made of aluminum oxide, which has previously been provided with AgPd contacts. The printed substrates are dried and then heated according to the firing program at 850 ° C as the peak temperature.

Bei einer Schichtdicke von 15 µm haben die Flächenwiderstände einen Wert von 2,5 kQ, einen TCR von -8x10-6/'C im Temperaturbereich von -55 bis +20°C und einen TCR von +7x10-6/°C im Temperaturbereich von +20 bis +150°C.With a layer thickness of 15 µm, the surface resistances have a value of 2.5 kQ, a TC R of -8x10- 6 / 'C in the temperature range from -55 to + 20 ° C and a TC R of + 7x10-6 / ° C in the temperature range from +20 to + 150 ° C.

Beispiel 2.Example 2.

Es wird eine Siebdruckpaste hergestellt mit dem Glaspulver aus Beispiel 1 und mit dem Widerstandsmaterial Pb2Rh0,25Ru1,75O6.5' das eine Teilchengrösse unter 0,2 µm hat in einem Gewichtsverhältnis 6:1. Die im Siebdruckverfahren hergestellten Widerstandsmuster auf einem Substrat, wie in dem Beispiel 1, werden nach dem Trocknen einem Brennprogramm ausgesetzt mit einer Spitzentemperatur von 750°C. Die erhaltenen Flächenwiderstände haben einen Wert von 0,3 MΩ bei einer Schichtdicke von 15 µm, einen TCR im Temperaturbereich von -55 bis +20°C von -6x 10-6/°C und in dem Bereich von +20 bis +150°Cvon +9x10-6/°C.A screen printing paste is produced with the glass powder from Example 1 and with the resistance material Pb 2 Rh 0.25 Ru 1.75 O 6.5 ', which has a particle size below 0.2 µm in a weight ratio of 6: 1. The resistance patterns on a substrate produced in the screen printing process, as in example 1, are subjected to a firing program after drying with a peak temperature of 750 ° C. The surface resistances obtained have a value of 0.3 MΩ with a layer thickness of 15 μm, a TC R in the temperature range from -55 to + 20 ° C from -6x 10- 6 / ° C and in the range from +20 to +150 ° Cfrom + 9x10 -6 / ° C.

Beispiel 3.Example 3.

Glaspulver mit einer mittleren Teilchengrösse von etwa 1 µm und der folgenden Zusammenstellung:

Figure imgb0006
wird in einem Gewichtsverhältnis von 1:4 mit dem Widerstandsmaterial Pb2Rh0,5Ru1,5O6,5 gemischt und zu einer Paste verarbeitet. Davon werden auf einem Al2O3-Substrat Widerstände im Siebdruckverfahren hergestellt und das Ganze wird einem Brennprogramm mit einer Spitzentemperatur von 850°C ausgesetzt. Die erhaltenen Widerstände haben bei einer Schichtdicke von 15 µm einen Wert für den Flächenwiderstand von etwa 50 kΩ. DerTCR beträgt:
Figure imgb0007
und
Figure imgb0008
 Glass powder with an average particle size of about 1 µm and the following composition:
Figure imgb0006
 is mixed in a weight ratio of 1: 4 with the resistance material Pb 2 Rh 0.5 Ru 1.5 O 6.5 and processed into a paste. Resistors are produced on an Al 2 O 3 substrate using the screen printing process and the whole is exposed to a firing program with a peak temperature of 850 ° C. With a layer thickness of 15 µm, the resistances obtained have a value for the sheet resistance of approximately 50 kΩ. The TC R is:
Figure imgb0007
 and
Figure imgb0008

Beispiel 4.Example 4.

Der in Beispiel 3 beschriebenen Paste werden 2 Gew.% Ti02 hinzugefügt. Das Substrat mit den darauf im Siebdruckverfahren angebrachten Widerständen wird einem Brennprozess mit einer Spitzentemperatur von 750°C ausgesetzt. Die Widerstände zeigen einen Flächenwiderstandswert von 0,8 MΩ bei einer Schichtdicke von 15 µm. DerTCR beträgt:2% by weight of TiO 2 are added to the paste described in Example 3. The substrate with the resistors attached to it by screen printing is exposed to a firing process with a peak temperature of 750 ° C. The resistors have a surface resistance value of 0.8 MΩ with a layer thickness of 15 µm. The TC R is:

Figure imgb0009
Figure imgb0009
Figure imgb0010
Figure imgb0010

Die Widerstände werden zur Erprobung ihrer Stabilität einer beschleunigten Dauerprobe während 200 Stunden bei 200°C in Luft ausgesetzt.To test their stability, the resistors are exposed to an accelerated endurance test for 200 hours at 200 ° C in air.

Die Widerstandswerte aller obenstehend beschriebenen Widerstände zeigten am Ende der Probe Abweichungen von weniger als ± 5%0.The resistance values of all the resistors described above showed deviations of less than ± 5% 0 at the end of the sample.

Claims (4)

1. A resistor paste for an electric resistor body whose resistance value during the whole life of the resistor body does not vary by more than ±5%o and which has a temperature coefficient of the resistance between -10x10-6/°C and +10x10-6/°C in the temperature range from -55 to +150°C, consisting of a mixture of a metal oxidic compound, a permanent binder and a temporary binder in the paste, in which the metal oxidic compound has the following formula:
Figure imgb0013
wherein 0.15 ≤y≤ 0.95 and O≤z≤ 1/2.
2. A resistor paste as claimed in Claim 1, characterized in that the permanent binder in the paste is a glass having a composition (in mol.%):
Figure imgb0014
3. A resistor paste as claimed in Claim 1 or 2, characterized in that it also comprises an insulating oxide which is poorly soluble in and poorly reacts with, respectively, the remaining components.
4. The use of the resistor paste as claimed in Claim 1 to 3 for the manufacture of electric resistors.
EP84200642A 1983-05-09 1984-05-07 Resistor paste for an electrical resistance Expired EP0124948B1 (en)

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Application Number Priority Date Filing Date Title
NL8301631 1983-05-09
NL8301631A NL8301631A (en) 1983-05-09 1983-05-09 RESISTANCE PASTE FOR A RESISTANCE BODY.

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EP0124948A1 EP0124948A1 (en) 1984-11-14
EP0124948B1 true EP0124948B1 (en) 1988-01-07

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US (1) US4499011A (en)
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JP (1) JPS59208701A (en)
KR (1) KR920000481B1 (en)
DE (1) DE3468577D1 (en)
NL (1) NL8301631A (en)

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US4857384A (en) * 1986-06-06 1989-08-15 Awaji Sangyo K. K. Exothermic conducting paste
FR2670008B1 (en) * 1990-11-30 1993-03-12 Philips Electronique Lab RESISTANCE CIRCUIT FOR STRESS GAUGE.
US5406852A (en) * 1992-03-18 1995-04-18 Matsushita Electric Industrial Co., Ltd. Pressure sensor having a resistor element on a glass dryer with electrodes connected thereto
US5955938A (en) * 1995-03-09 1999-09-21 Sumitomo Metal (Smi) Electronics Devices, Inc. RuO2 resistor paste, substrate and overcoat system

Citations (1)

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Publication number Priority date Publication date Assignee Title
US3681262A (en) * 1970-10-01 1972-08-01 Du Pont Compositions for making electrical elements containing pyrochlore-related oxides

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EP0124948A1 (en) 1984-11-14
US4499011A (en) 1985-02-12
KR850000135A (en) 1985-02-25
NL8301631A (en) 1984-12-03
JPS59208701A (en) 1984-11-27
DE3468577D1 (en) 1988-02-11
KR920000481B1 (en) 1992-01-14

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